Number | Date | Country | Kind |
---|---|---|---|
17173/73 | Dec 1973 | CH |
Number | Name | Date | Kind |
---|---|---|---|
2819298 | Isler et al. | Jan 1958 | |
2917539 | Isler et al. | Dec 1959 | |
3070629 | Ohloff et al. | Dec 1962 | |
3404185 | Thomas et al. | Oct 1968 |
Entry |
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Ter-Sarkisyan et al., "Chem. Ab.," Vol. 68, 104589u, (1968). |
Garbisch, "J.A.C.S.," Vol. 85, pp. 1696-1697, (1963). |